JPH0448660Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a paddy field working machine represented by a fertilization-only machine and a rice transplanter with a fertilization device.

[Conventional technology]

Conventionally, fertilizer application ditchers were attached to ground floats that oscillated up and down (for example,
(Illustrated in Publication No. 105409).

[Problem that the invention attempts to solve]

When adopting such a mounting structure, since the grounding float moves up and down, a flexible mechanism is required between the groove cutter, which moves up and down accordingly, and the manure feeding mechanism fixed to the machine body. It was necessary to devise a mechanism such as using a bellows-shaped downstream pipe.

The purpose of the present invention is to rationally select the mounting position of the furrower to simplify the mechanism of the fertilization device (omitting the above-mentioned flexibility mechanism), and to create a structure that matches the shape of the furrower. The point is to provide what is possible.

[Means for solving problems]

The characteristic configuration of the present invention is that a rearward-released groove with a U-shaped cross section is passed vertically through an insertion hole formed in a vertically moving ground float and fixed to the aircraft body, and the insertion hole in the ground float is fixed. The rear wall portion facing the insertion hole is formed into a vertically thin thin wall portion, and the thin wall portion is constructed across the upper portions of the left and right side wall portions facing the insertion hole, and the effects thereof are as follows. It is as follows.

[Effect]

○B Due to the characteristic configuration, by installing the groove cutting device on the machine body side, there is no relative movement between it and the fertilizer delivery mechanism, which is also provided on the machine body side, and there is no need to provide a flexible mechanism on the downflow pipe, etc.

○B Moreover, by not only simply attaching the groove cutter to the aircraft body, but also by passing it vertically through the insertion hole of the ground float, the insertion hole can be closed by moving the groove cutter vertically and relative to the groove cutter due to the vertical movement of the ground float. The inner wall of the trencher can scrape off mud adhering to the circumferential surface of the furrower, preventing mud from adhering to the fertilizer fall path of the furrower through the U-shaped cross-section opening opened to the rear. It can be prevented.

○C Furthermore, since the rear part facing the insertion hole corresponding to the rear release part of the groove creator is formed into a thin part that is thin in the vertical direction, the left and right side walls are smaller than when this rear wall part is released. In addition to reducing the bending stress in the expansion direction applied to the wall, by positioning this thin wall part upward, it is possible to reduce the bending stress in the thick wall part, which is seen when the thick wall part is constructed like the left and right side walls, for example. Mud is not pushed into the open rear part of the vessel, and on the contrary, mud can flow better through the space below the thin wall.

[Effect of idea]

As mentioned above, by attaching the groove cutter to the fuselage side and omitting the accommodating mechanism for accommodating the downstream pipe, it goes without saying that it has the effect of simplifying the downstream path and suppressing clogging phenomena. In addition, by setting the installation position of the groove maker in the insertion hole, it is possible to have the effect of suppressing mud clogging in the groove maker, and the groove maker can be installed on the fuselage side. We have now been able to expand upon this and create more advanced effects.

〔Example〕

A one-wheel walkable rice transplanter as a paddy field work machine will be explained. As shown in Figure 5, the single-wheel walking rice transplanter is
An engine 1 and a transmission case 2 are provided at the front, left and right side frames 3, 3, which also serve as transmission cases, extend rearward from both sides of the transmission case 2, and at the rear ends of the left and right side frames 3, 3. A planting case 5 equipped with a seedling planting mechanism 4, a seedling stand 6 supported by the planting case 5 and capable of sliding laterally, and a single propulsion wheel 7 pivoted on one side of the tip for vertical swinging. A wheel transmission case 8 is pivotably supported on one side of the transmission case 2, side floats 9 are positioned on both sides of the wheel transmission case 8 and serve as ground floats that can swing up and down around a rear fulcrum X; An elevating cylinder (not shown) that swings the propulsion wheel 7 up and down to maintain a constant attitude of the seedling planting mechanism 4 against the ground based on the up and down swing of the side float 9, and a preliminary seedling stand 11 is provided above. A bonnet 12 and a fertilizer application device 13 are provided.

The fertilizer application device 13 includes fertilizer storage hoppers 14 located on both sides of the bonnet 12, a feeding case 15 containing a feeding mechanism (not shown), a downstream pipe 16 below the feeding case 15, and a groove maker 17. It is composed of a groove cutting plate 18. As shown in FIG. 1, the groove cutter 17 is of a rear-opening type and has a U-shaped cross section, and is made of a metal material.
8 are integrally connected to form the insertion hole 19 of the side float 9.
It is installed through the top and bottom. As shown in FIGS. 1 and 2, these integrally connected groove makers 17
The front end of the groove plate 18 is fixed with a bolt 21 to a bracket 20 which is U-shaped in plan view and is projecting laterally from the side frames 3, 3 so as to be repositionable in the longitudinal direction of the aircraft. It is attached to the fuselage side. On the other hand, the insertion hole 19 allows the right and left side walls 22 of the corresponding side float 9 to be inserted into the groove making tool 1.
7, the opening is set to be in close contact with the outer circumferential surface, and a thin wall portion 24 is spanned over the upper portions of the rear portions 22, 22 of the left and right side walls.

In addition, downward protruding portions 22A, 22A are provided on the left and right side walls 22, 22 with a smaller gap with the trencher 17, thereby increasing the mud scraping effect on the trencher 17, and removing straw debris etc. It has the effect of pushing into the plane. Moreover, the thin portion 24
A bar plate 25 is erected upward and is configured to prevent mud thrown by the wheels 7 from entering from the rear open portion into the trencher 17.

[Another embodiment] The insertion hole 19 may be formed so that only the groove making device 19 passes through it.

A plate formed separately from the ground float 9 may be attached as the thin wall portion 24 .

Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

The drawings show an embodiment of the paddy field work machine according to the present invention. Figure 1 is a plan view showing the arrangement of the ground float and the groove cutting plate/grooving device, and Figure 2 shows the attachment of the groove cutting plate to the machine body. Fig. 3 is a rear view showing the thin wall part of the grounding float, Fig. 4 is a vertical cross-sectional rear view showing the arrangement of the insertion hole and groove cutting plate of the grounding float, and Fig. 5 is a side view showing the condition.
The figure is a side view of a single-wheel walking rice transplanter. 9...Grounding float, 17...Groove cutter, 19...
...Insertion hole, 22... Side wall part, 24... Thin wall part.

Claims (1)

[Scope of utility model registration request] After the groove device 17 having a U-shaped cross section released at the rear is vertically penetrated through the insertion hole 19 formed in the grounding float 9 that moves up and down, and fixed to the fuselage, and facing the insertion hole in the grounding float 9. A rice paddy working machine in which the wall portion is formed into a thin wall portion 24 that is thin in the vertical direction, and the thin wall portion 24 is constructed over the upper portions of the left and right wall portions 22, 22 facing the insertion hole 19.